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多选题
Which of the following describes the roles of devices in a WAN？（）
A
A CSU/DSU terminates a digital local loop
B
A modem terminates a digital local loop
C
A CSU/DSU terminates an analog local loop
D
A modem terminates an analog local loop
E
A router is commonly considered a DTE device
F
A router is commonly considered a DCE device
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更多 “多选题Which of the following describes the roles of devices in a WAN？（）AA CSU/DSU terminates a digital local loopBA modem terminates a digital local loopCA CSU/DSU terminates an analog local loopDA modem terminates an analog local loopEA router is commonly considered a DTE deviceFA router is commonly considered a DCE device” 相关考题
考题
单选题While troubleshooting a network connectivity problem, a technician observes steady link lights on both the workstation NIC and the switch port to which the workstation is connected. However, when the ping command is issued from the workstation, the output message "Request timed out." is displayed. At which layer of the OSI model does the problem most likely exist（）。A
the session layerB
the protocol layerC
the data link layerD
the access layerE
the network layerF
the application layer
考题
多选题Which two statements are true about the command ip route 172.16.3.0 255.255.255.0 192.168.2.4 (Choose two.)（）。AIt establishes a static route to the 172.16.3.0 networkBIt establishes a static route to the 192.168.2.0 networkCIt configures the router to send any traffic for an unknown destination to the 172.16.3.0 networkDIt configures the router to send any traffic for an unknown destination out the interface with the address 192.168.2.4EIt uses the default administrative distanceFIt is a route that would be used last if other routes to the same destination exist
考题
单选题男婴，7个月，近两个月来肤色苍白，食欲减退入院。生后一直人工喂养，未加辅食。查体：营养差，皮肤、黏膜苍白，心前区有Ⅱ级收缩期杂音，肝肋下3cm，脾肋下1cm。化验：血红蛋白及红细胞均低于正常，白细胞、血小板及网织红细胞均正常。此患儿发病的主要原因是（）A
喂养不当B
丢失过多C
营养物质吸收障碍D
生长发育过快E
慢性感染
考题
单选题Wich command can you use to manually assign a static IPV6 address to a router interface?（）A
ipv6 address PREFIX_1::1/64B
ipv6 autoconfig 2001:db8:2222:7272::72/64C
ipv6 autoconfigD
ipv6 address 2001:db8:2222:7272::72/64
考题
多选题Which two subnetworks would be included in the summarized address of 172.31.80.0 /20?（）A172.31.17.4/30B172.31.51.16/30C172.31.64.0/18D172.31.80.0/22E172.31.92.0/22F172.31.192.0/18
考题
单选题The ip subnet zero command is not configured on a router. What would be the IP address of Ethernet0/0 using the first available address from the sixth subnet of the network 192.168.8.0/29? （）A
192.168.8.25B
192.168.8.41C
192.168.8.49D
192.168.8.113
考题
多选题Which Layer 1 devices can be used to enlarge the area covered by a single LAN segment?（）ASwitchBRouterCNICDhubERepeaterFRJ-45 transceiver
考题
多选题Which of the following are types of flow control?（）AbufferingBcut-throughCwindowingDcongestion avoidanceEloadbalancing
考题
单选题DNS servers provide what service?（）A
They run a spell check on host names to ensure accurate routingB
They convert domain names into IP addressC
Given an IP address,they determine the name of the host that is soughtD
They map individual hosts to their specific IP addresses
考题
单选题患儿3岁，发热3天，昏迷2天。T38℃，伴有颈抵抗，病理反射阳性，呼吸快慢不均，有双吸气，两肺未闻及湿啰音，心率140次/分，血气PaO245mmHg，PaCO255mmHg。
考虑为（）A
肺炎B
心力衰竭C
中枢性呼吸衰竭D
周围性呼吸衰竭E
喉炎
考题
多选题Refer to the exhibit. The two connected ports on the switch are not turning orange or green. What would be the most effective steps to troubleshoot this physical layer problem?（）AEnsure that the Ethernet encapsulations match on the interconnected router and switch ports.BEnsure that cables A and B are straight-through cables.CEnsure cable A is plugged into a trunk port.DEnsure the switch has power.EReboot all of the devices.FReseat all cables.
考题
单选题某患儿因蛔虫病入院治疗，其表现为不安、易惊、磨牙、异食癖。血嗜酸性粒细胞显著增高。造成这些临床表现的原因可能是（）A
蚴虫移行发育B
蚴虫钻孔C
成虫游走D
成虫钻入胆道E
成虫代谢物被吸收
考题
单选题On point-to-point networks, OSPF hello packets are addressed to which address?（）A
127.0.0.1B
172.16.0.1C
192.168.0.5D
223.0.0.1E
224.0.0.5F
254.255.255.255
考题
单选题女孩，3岁。发热伴流涕、咳嗽、流泪。4d后体温达40℃，耳后发际出现皮疹，为淡红色斑丘疹，渐延及全身和手心足底，疹间皮肤正常。本病的隔离种类是（）A
严密隔离B
接触隔离C
消化道隔离D
呼吸道隔离E
血液隔离
考题
单选题Choose the most accurate statement regarding the account qualification and planning service component in the prepare phase.（）A
providing a partner with information regarding customer acceptance of a new solutionB
providing information regarding current network infrastructure readinessC
using stakeholder interviews to identify stakeholders and decision-makers high-level solutionrequirements timelines and the scope of an opportunityD
adjusting a solution to account for a customer’s physical site characteristics
考题
单选题When a new trunk link is configured on an IOS based switch, which VLANs are allowed over the link?（）A
All defined VLANs are allowed on the trunk by default.B
Each VLAN, or VLAN range, that is specified with the switchport mode command.C
Each VLAN, or VLAN range, that is specified with the vtp domain command.D
Each VLAN, or VLAN range, that is specified with the vlan database command.
考题
单选题The enable secret password appears as an MD5 hash in a router’s configuration file， whereas the enablepassword is not hashed （or encrypted， if the password-encryption service is not enabled）. What is thereason that Cisco still support the use of both enable secret and enable passwords in a router’sconfiguration？（）A
The enable password is present for backward compatibility.B
Because the enable secret password is a hash， it cannot be decrypted. Therefore， the enable password is used to match the password that was entered， and the enable secret is used to verify that the enablepassword has not been modified since the hash was generated.C
The enable password is considered to be a router’s public key， whereas the enable secret password is considered to be a router’s private key.D
The enable password is used for IKE Phase I， whereas the enable secret password is used for IKE Phase II.
考题
单选题关于原发型肺结核，下列描述错误的是（）A
是小儿肺结核最常见的类型B
包括原发综合征和支气管淋巴结核C
肺部原发病灶多位于肺尖部D
肺部原发病灶以右肺多见E
典型X线特征呈哑铃形
考题
多选题For what two purposes does the Ethernet protocol use physical addresses?（）Ato uniquely identify devices at Layer 2Bto allow communication with devices on a different networkCto differentiate a Layer 2 frame from a Layer 3 packetDto establish a priority system to determine which device gets to transmit firstEto allow communication between different devices on the same networkFto allow detection of a remote device when its physical address is unknown
考题
多选题What are two recommended ways of protecting network device configuration files from outside network security threats (Choose two.)（）。AAllow unrestricted access to the console or VTY portsBUse a firewall to restrict access from the outside to the network devicesCAlways use Telnet to access the device command line because its data is automatically encryptedDUse SSH or another encrypted and authenticated transport to access device configurationsEPrevent the loss of passwords by disabling password encryption
考题
单选题患儿，男，3岁。因发热，四肢关节游走性肿痛而入院。查体发现，心率快，176次/分，心音低钝，颈静脉怒张，肝大。立即进行治疗，不正确的是（）A
吸氧B
洋地黄制剂C
利尿剂D
维持电解质平衡E
阿司匹林
考题
单选题如果交换机的vty线路配置有 transport input ssh 命令，则在该交换机上输入 crypto key zeroize rsa 命令后会发生什么情况？（）A
会创建一个新的 RSA 密钥对。B
交换机默认为仅允许 Telnet 连接。C
交换机不再能作为 SSH 客户端进行 SSH 连接。D
交换机仅在生成新的 RSA 密钥对后允许远程连接。
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